onslow



(No Model.)

2 Sheets-Sheet 1';

A. ONSLOW.

I PENDULUM SCALE.

Patented Jul'y 17, 1883.

Modem 2 v 2 Sheets-Sheet 2. 4/ A. ONSLOW.

PENDULUM SCALE. v No. 281,292. Patented July 17,1883.

.TII

% I K I K his finer I UNITED STATES PATENT @FFICE.

ADOLPHE ONSLOWV, OF JERSEY CITY, NEV JERSEY.

PENDULUlVl-SCALE.

SPECIFICATION forming part of Letters Patent No. 281,292, dated July 17,1883,

Application tiled September 13. 1890. (No model.)

1".) all whom, 2L5 may concern:

Be it known that I, ADOLPHE ONsLow, of Jersey City, in the county ofHudson and State of New Jersey, have invented an ImprovedWeight-Indicating Scale, of which the following is a specification.

This invention relates to a new scale which, with the assistance of apermanent weight, indicates by a movable pointer the weight of thearticle suspended from or placedupon it. The

improved scale is to take the place of the ordinary spring-scale, thepermanent weight the place of the ordinary spring in such scales.

My invention consists of several features of novel construction andcombination, which are hereinafter more fully described.

In the accompanying drawings; Figure 1 is a face view, partly insection, of my improved scale. Figs. 2 and 8 are sectional side views ofthe two main operating-levers. Fig. 4 is a vertical crosssection of thescale Fig. 5, a horizontal section thereof, and Fig. 6 a detailcross-section on theline c c, Fig. 2.

A represents the housing of the scale, which may be made in two parts,bolted together by bolts a, or of other suitable construction. NVithinthis housing are pivoted the main levers B and C. The lever B, which ispreferably of the peculiar construction hereinafter described, hangsonknife-edge pivots b, and carries on its short arm, on knife-edgepivots d, the chain D, from which the article to be weighed issuspended. The long arm of the lever B has a projecting pin, 6, whichpasses through the slot of a strap or rod, E, that is suspended from alever, F, said lever F carrying a toothed segment, f, as shown inFig. 1. The lever O is at g pivoted in the housing A and bears upon thelever B, (see Figs. 2 and 3,) and carries at its free end the permanentweight G. The toothed segment f matches into a pinion, h, the arbor ofwhich carries the pointer H of the scale, said pointer moving over agraduated scale or dial-plate, I. The lever B is provided at or near itssides with adjusting-weights i, for the purpose of properly regulatingthe scale and balancing the le ver B. The construction of the lever B ispreferably the following: Two cheek-pieces, j 7', of cast metal, carrybetween them and support on lower ribs a steel plate, 70. (See Fig. 6.)

The upper edge of the steel plate is is hollow or rounded, as indicatedin Fig. 6. The parts j j and 7c are properly united by suitable rivets.The steel plate It does not extend up as high as the cheek-pieces sothatthus a groove, Z, is formed in the upper edge of the lever B, forthe reception of the lever O, which also is a steel plate by preference,and which has its lower edge rounded, as shown in Figs. 2 and 3, sothat, in reality, at any one time only one point of contact will bebetween the lever O and the lever B, the latter being tangential to theformer. The pivots b of the lever B are by preference formed at the endsof a yokeshaped bar, m, (see Figs. 4, 2, and 3,) which is securedtransversely inthe lever B, as clearly shown, and which is grooved atthe upper side in continuation and completion of the groove Z, as shown.the scale, where they have their support in the frame or housing A, Iprefer to rest on the inner peripheries of steel tubes or sockets n,which are fitted in corresponding recesses of th e housing, as shown inFigs. 4 and 5, and which can be turned if worn at any one point tofurnish fresh concave bearings. Steel plates 0 should be placed againstthe ends of the tubes 92, to prevent undue friction at the ends of theknife-edge pivots. The pinion h meshes also into a toothed segment, 1),which is affixed to a lever, L, that is hung in the housing; but thesegments f and p are engaged into opposite sides of the pinion, as shownin Fig. 1, so that when one of said segments is up the other is down,and Vice versa. In its unloaded position the lever B rests 011 asuitable stop, 3.

The operation of the scale is as follows WVhen the load is placed on thescale-platform, or otherwise connected with the chain, the short end orarm of the lever Bis pulled down and its long arm is elevated, (see Fig.3,) and this long arm in turn raises the lever G by contact with thecurved lower edge of the same until said lever G, with its weight G,reaches the requisite position for balancing the load,

end of the lever G will cease. The upward The several knife-edge pivotsof when, of course, further ascentof the weighted f, and prevents thepinion h from leaving the segmentf and pointer from gaining lost motionor whirling under a sudden influence. The slot in the rod 6 allows thepointer to right itself after the lever B descends to its normalposition, when the load is taken away, and prevents the descent of thelever B from suddenly moving the pointer, and thereby inj uring themechanism. In other words, as soon as the load is taken off the platformthe momentum of the highly-sped pointer, if pulled down by the suddendescent of the lever B, might break the gearing; but by means of theslot in the strap 0 the descent of the lever B does not positivelyaffect the position of the pointer other than-to enable the pointer toright itself. To this end the pointer is balanced, or the levers F and Lare properly balanced, so that the pointer will always assume the zeroposition when there is no load on the platform or chain 1).

I claim 1. In a scale, the combination of the lever B, "from one end ofwhich the load-carrying link or platform is suspended, the other end ofwhich connects with the pointer, as described, with the lever l, placedon top of said lever B and carrying only the permanent weight Gr, substantially herein shown and described.

2. The lever B, constructed of the pieces j j and 7:, in combinationwith the yoke-shaped cross-piece m, carrying the pivots I),substantially as described.

3. The combination of the load-carrying lever B and mechanism,substantially as dc scribed, for connecting the same in manner stated,with the pointer H, with the permanent-weight-carrying lever O, thatrests upon the lever B, and with the adjusting-weights 1 on said leverB, substantially as shown and described.

4. The lever B, carrying the load at D, and provided with pin 6, incombination with the slotted strap or rod 19, lever F, and pointermovingsegment f, substantially as described, all arranged so that the lever B,when loaded, will move pointer, but will leave the pointer to rightitself when unloaded, substantially as specified.

5. The combination of the pointer H and its pinion h with themoving-segment f and bal ancing-segment p, substantially as described.

6. The combination of the tube a, which is capable of being revolved onits support,wilh the knife-edge pivot I) of a scale, said pivot restingon the concave inner periphery of said tube, substantially as specified.

7. The combination of the tube a and end plate, 0, with the housing A,and with the knile-edge pivot I) of the lever of a scale, said pivotresting on the concave inner periphery of said tube, substantially asdescribed.

- ADOLPHE ONS LO\\'.

Vitnesses:

\VILLY G. E. SCHULTZ, HARRY W. TURK.

